So far we have described the setting of [1]}. However, in our model we do not allow Sender to choose among all Bayes-plausible signaling schemes, but only among schemes that satisfy certain restrictions (see Subsection REF  for motivation). We define two general families of constraints: ex ante and ex post. A constraint of the latter type restricts the admissible values of a certain function of \(p_{\sigma }\)  for every possible \(p_{\sigma }\) , while a constraint of the former type restricts only the expectation of such a function.
